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[cache_check (rust)] Fix discard bitset availability checking

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This commit is contained in:
Ming-Hung Tsai 2021-05-21 12:24:26 +08:00
parent ce94ba73a5
commit 6a29f6a41a
1 changed files with 4 additions and 1 deletions
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5
src/cache/check.rs vendored
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@ -274,8 +274,11 @@ pub fn check(opts: CacheCheckOptions) -> anyhow::Result<()> {
return Ok(()); return Ok(());
} }
// The discard bitset is optional and could be updated during device suspension.
// A restored metadata therefore comes with a zero-sized discard bitset,
// and also zeroed discard_block_size and discard_nr_blocks.
let nr_origin_blocks; let nr_origin_blocks;
if sb.flags.clean_shutdown { if sb.flags.clean_shutdown && sb.discard_block_size > 0 && sb.discard_nr_blocks > 0 {
let origin_sectors = sb.discard_block_size * sb.discard_nr_blocks; let origin_sectors = sb.discard_block_size * sb.discard_nr_blocks;
nr_origin_blocks = Some(origin_sectors / sb.data_block_size as u64); nr_origin_blocks = Some(origin_sectors / sb.data_block_size as u64);
} else { } else {